use like expression in SELECT query. It works well when I put Chinese characters

When I use like expression in SELECT query. It works well when I put Chinese characters in
LIKE expression on NONE PRIMARY KEY columns . BUT when I put them in LIKE expression on PRIMARY
KEY , it occurs an Exception:‍

select * from "test3" where PK like '手机%'; ‍

org.apache.phoenix.schema.IllegalDataException: CHAR types may only contain single byte characters
(手机) ‍